蒸汽驱密闭取心实践及认识

本文根据克拉玛依油田九区稠油油藏蒸汽驱阶段密闭取心实践情况，论述了密闭取心的主要技术特征，要求及现场与室内选样原则；重点阐述了通过密闭取心所建立的蒸汽驱驱替模式；分析了蒸汽驱的主要驱替机理；提出了改善蒸汽驱效果的技术措施。本项研究将对稠油热采开发模式，地质条件变化规律，剩余油分布及驱替效率研究工作具有积极意义；对改善汽驱效果亦具有重要指导意义。

SEALED CORING OF STEAM DRIVED FORMATION-PRACTICE AND RECOGNITION

Based on the practice of coring from the steam drived reservoir in region IX of Karamay oilfield, this paper demonstrates the main technical feature, requirements and principles in fieldand in-house sampling,and stressed on the drive model established by a study of the sealedcores.The main driving mechanism of the steam drive is analyzed and technical measures forimproving the results of steam drive are suggested.This study is significant on the development model of thermal drive, the variation of geologic conditions, the distribution of remaining oil and the efficiency of steam drive. It also haS an important guide in improving the results of the steam drive.